Note that this reference documentation is identical to the help that is displayed in MATLAB when you type “help ft_artifact_threshold”.

  FT_ARTIFACT_THRESHOLD scans for trials in which the range, i.e. the minimum, the
  maximum or the range (min-max difference) of the signal in any channel exceeds a
  specified threshold.
  Use as
    [cfg, artifact] = ft_artifact_threshold(cfg)
  with the configuration options
    cfg.dataset     = string with the filename
    cfg.headerfile  = string with the filename
    cfg.datafile    = string with the filename
  and optionally
  Alternatively you can use it as
    [cfg, artifact] = ft_artifact_threshold(cfg, data)
  where the input data is a structure as obtained from FT_PREPROCESSING.
  In both cases the configuration should also contain
    cfg.trl        = structure that defines the data segments of interest, see FT_DEFINETRIAL
    cfg.continuous = 'yes' or 'no' whether the file contains continuous data
  The following configuration options can be specified   = cell-array with channel labels
    cfg.artfctdef.threshold.bpfilter  = 'no' or 'yes' (default = 'yes')
    cfg.artfctdef.threshold.bpfreq    = [0.3 30]
    cfg.artfctdef.threshold.bpfiltord = 4
  It is also possible to use other filter (lpfilter, hpfilter,
  bsfilter, dftfilter or medianfilter) instead of a bpfilter for
  preprocessing, see FT_PREPROCESSING
  The detection of artifacts is done according to the following settings,
  you should specify at least one of these thresholds
    cfg.artfctdef.threshold.range     = value in uV or T, default  inf
    cfg.artfctdef.threshold.min       = value in uV or T, default -inf
    cfg.artfctdef.threshold.max       = value in uV or T, default  inf
    cfg.artfctdef.threshold.onset     = value in uV or T, default  inf
    cfg.artfctdef.threshold.offset    = value in uV or T, default  inf
  When cfg.artfctdef.threshold.range is used, the within-channel peak-to-peak range
  is checked against the specified maximum range (so not the overall range across
  channels). In this case the whole trial will be marked as an artifact.
  When cfg.artfctdef.threshold.onset and offset are used, the rising and falling
  flank are thresholded with different values. In case onset and offset are both
  positive, the data will be thresholded above their values. In case both onset and
  offset are negative, the data will be thresholded below their values.
  Note that this function does not support artifact- or filterpadding.
  The output argument "artifact" is a Nx2 matrix comparable to the
  "trl" matrix of FT_DEFINETRIAL. The first column of which specifying the
  beginsamples of an artifact period, the second column contains the
  endsamples of the artifactperiods.
  To facilitate data-handling and distributed computing you can use
    cfg.inputfile   =  ...
  If you specify one of these (or both) the input data will be read from a *.mat
  file on disk and/or the output data will be written to a *.mat file. These mat
  files should contain only a single variable, corresponding with the
  input/output structure.